o,k,m,/m recording code

A method for encoding data to meet a maximum run length limitation k, the method comprising the steps of:

• providing user data that includes a plurality of bits, wherein said bits have a value of 1 or 0;
• performing an ECC computation on said plurality of user data bits to add ECC symbols in the form of a plurality of ECC bits;
• randomizing the plurality of user data bits and said plurality of ECC bits using a default seed;
• analyzing said randomized user data bits and ECC bits to determine whether a number of consecutive bits have a common value;
• and,
• inverting the value of a bit, when the number of consecutive bits having a common value exceeds the maximum run length limitation k.

A method comprising the steps of:

• randomizing data using a default seed, wherein said randomized data includes a string of bits and wherein said bits have a value of 1 or 0;
• testing said string of bits to determine whether said string of bits equals a predetermined value;
• and,
• inverting the value of a bit within the string of bits when said string of bits equals said predetermined value.

A method for encoding data to avoid an offensive string of bits, the method comprising the steps of:

• providing user data that includes a plurality of bits, wherein said bits have a value of 1 or 0;
• performing an ECC computation on said user data to add ECC symbols in the form of a plurality of ECC bits;
• randomizing the plurality of user data bits and said plurality of ECC bits using a default seed;
• testing said plurality of randomized user data bits and said plurality of randomized ECC bits to determine whether they include an offensive string of bits;
• and,
• inverting the value of a bit when the tested bits include the offensive string of bits.

A method for encoding data to meet a maximum run length limitation k, the method comprising the steps of:

• randomizing data using a default seed, wherein said randomized data includes a plurality of bits and wherein said bits have a value of 1 or 0;
• analyzing said data to determine whether a number of consecutive bits having a value of 0 exceeds the maximum run length limitation k;
• and,
• inverting the value of a bit, when the number of consecutive bits having a value of 0 exceeds the maximum run length limitation k.

A method for encoding data to meet a maximum run length limitation k, the method comprising the steps of:

• providing user data that includes a plurality of bits, wherein said bits have a value of 1 or 0;
• performing an ECC computation on said plurality of user data bits to add ECC symbols in the form of a plurality of ECC bits;
• randomizing the plurality of user data bits and said plurality of ECC bits using a default seed;
• analyzing said randomized user data bits and ECC bits to determine whether a number of consecutive bits have a value of 0;
• and,
• inverting the value of a bit, when the number of consecutive bits having a value of 0 exceeds the maximum run length limitation k.